外研版 (2019)选择性必修 第四册Unit 5 Into the unknown获奖ppt课件

这是一份外研版 (2019)选择性必修 第四册Unit 5 Into the unknown获奖ppt课件，共24页。PPT课件主要包含了Picture 1，Picture 2，Picture 3，Picture 4，Para 2，Para 3，Para 1，Para 5，Para 6，Para 4等内容，欢迎下载使用。

Watch and answer
earthquakes; slar eclipse; thunder and lightning; mirage
Part 1 Starting ut
In many cultures, there were ancient beliefs that slar eclipses were caused by a creature eating the sun. In Vietnam, that creature was a giant frg. In Nrway, a wlf, and in China, it was a huge dg.
In Medieval Eurpe, peple thught that supernatural frces caused it, which was a sign f bad times ahead. In Ancient China, peple believed that this was caused by the breath f a dragn
Scientists nw knw that earthquakes are caused by the mvement f tectnic plates.
In fact, slar eclipses happen when the Mn passes between Earth and the sun temprarily blcking the sun’s light.
Mdern science tells us that lightning is an electric charge mving between cluds and the earth. Thunder is a shck wave f sund caused by lightning.
These days, peple knw that a mirage happens when layers f air with varying temperatures caused light t bend.
3. The mdern scientific explanatins
A legendary city in the wrk f the Greek philspher Plat. It had fabulusly wealthy and advanced civilizatin, swept int the sea t be lst frever.
A cllectin f giant gemetric patterns and animal shapes.The landscapes was designated a UNESCO Wrld Heritage Site in 1994, but numerus studies and theries have nt explained the reasn why the lines were created.
Nazca Lines
TuTnguska event
Enrmus explsin estimated t have ccurred at 7:14 am plus r minusne minute n 30 June 1908, at an altitude f 5--10 km, flattering 2000 square km and charring ver 100 square km f pine frest near the Pdkamennaya Tunguska River in Russia.
A regin f space-time exhibiting gravitatinal acceleratin, which is s strng that nthing, nt even light, can escape frm it.
1. What d yu knw abut these ancient civilizatins?
They were very ppular befre the ancient civilizatins suddenly disappeared.
2. What might be the reasns behind their cllapse?
The destructin f mankind might be the reasns behind their cllapse.
Part 2 Develping ideas
Reading cmprehensin
1. What happened in the early 16th century? A. The Maya lived a primitive life. B. Eurpeans arrived in Central America. C. The Maya civilizatin reached its peak.
2. Why has n ne yet been able t fully explain the Maya writing system? A. It’s t mysterius. B. It’s t impractical. C. It’s t cmplicated.
answer B .
answer C .
Reading The Mysteries f the Maya
3. What made the Maya peple reduce their ability t deal with natural disasters? A. The grwth f the Maya ppulatin. B. Nt fllwing the laws f nature t change the landscape. C. Cnflicts between freign natinalities and lcal peple.
4. What d scientists think was the main reasn the Maya civilizatin began t cllapse? A. Cutting dwn trees. B. The drught. C. Trpical cyclnes.
The tpic sentence & its paragraph
Central America
The file f Maya civilizatin
Pssible reasns fr cllapse 1 human causes - reduced the ability t deal with 3 ____________________________;▼4 _____________________________________; ▼5 ____________________________________;▼6 ____________________________________;2 natural causes - a series f the 7 ____________________ between 700 AD and 1000 AD, each 8 ____________________________________.
natural disasters
turning wetlands int fields
digging huge canal systems
lasting fr a cuple f years
Cmparing the highly-sphisticated civilizatins f the Maya and Ancient China reveals sme surprising similarities. They bth pssessed a detailed understanding f 1 _____________________ and astrnmy, which helped them maintain an accurate 2 ____________________, and a cmplex
mathematics
Cultural cmparisn with infrmatin frm the text
3 ___________________ that used signs t represent sunds and meanings. It can therefre be difficult t explain why, despite their excellent cnstructin skills, the Maya never learned t use 4 _______________________________________, while the ancient Chinese did. Facts such as these add t the mystery surrunding Maya civilizatin, driving peple t find ut why it 5 _______________ while thers, such as Ancient China, survived and thrived.
writing system
wheels, metal tls r animal pwer
disappeared
1. What is the authr’s purpse in starting the passage with the stry abut William Gadury?
In rder t intrduce the tpic f the passage, the authr presents the stry shws hw the secrets f Ancient Maya civilizatin have captured peple’s imaginatin.
Think & Share
2. What lessns can yu learn frm the cllapse f Maya civilizatin? Hw can this infrmatin help the develpment f tday’s sciety?
Human beings shuld respect nature and nt vilate the law f its develpment. On the ne hand, we fllw the natural law and believe in the survival f the fittest, On the ther hand, we shuld actively transfrm the wrld arund us and bravely fight agianst kinds f disasters as pssible as we can.
1. The fact that Maya sciety was technlgically primitive makes its achievements all the mre incredible and mysterius. [句式分析] “that Maya sciety was technlgically primitive”是 that 引导的 同位语 从句，解释说明主名词the fact的具体内容，引导词that只起引导性作用，不在从句中充当任何成分。[尝试翻译] 事实上，玛雅社会在技术上是原始的，这使得它的成就更加难以置信和神秘。
Language appreciatin
2. This is likely t have led t a series f drught, each lasting fr a cuple f years. [句式分析] “each lasting fr a cuple f years”是由“代词+ 现在分词”构成的 独立主格 结构。 其中动词last 与逻辑主语each 构成 主动 语态关系，故使用 现在 分词。 [尝试翻译] 这可能导致了一系列的旱灾，每一次旱灾持续几年时间。
3. Meanwhile, the rise and fall f this civilizatin must als leaves us thinking abut ur wn past, present and future. [句式分析] “leave + 宾语+ 宾语补足语”表示“ 使处于某种状态 ”，宾语补足语可以是现在分词、过去分词、不定式、形容词、名词或小品词（n/ff; up/ dwn; away/ in/ut）。[尝试翻译] 与此同时，这种文明的兴衰也必然让我们思考自己的过去、现在以及未来。
Language pints
1. Review the basic usage f the new wrds and expressins learned in this perid. 2. Further understand the passage by reading and listening mre. 3. Writing a 60-wrd summary f the passage.
Assignments fr this perid